| 年份 | 己内酰胺进口金额(百万美元) |
|---|---|
| 1994 | 121.33 |
| 1995 | 183.66 |
| 1996 | 208.50 |
| 1997 | 173.81 |
| 1998 | 221.15 |
| 1999 | 227.13 |
| 2000 | 338.40 |
| 2001 | 309.05 |
| 2002 | 312.85 |
| 2003 | 430.60 |
| 2004 | 722.15 |
| 2005 | 1072.67 |
| 2006 | 884.74 |
| 2007 | 1101.00 |
| 2008 | 1084.23 |
| 2009 | 978.38 |
| 2010 | 1560.25 |
| 2011 | 2059.04 |
| 2012 | 1813.65 |
| 2013 | 1075.92 |
| 2014 | 504.20 |
| 2015 | 360.71 |
| 2016 | 277.85 |
| 2017 | 429.46 |
| 2018 | 349.42 |
| 2019 | 306.23 |
| 2020 | - |
| 2021 | - |
| 2022 | - |
| 2023 | - |
| 2024 | - |
| 2025 | - |